Hygrometer.



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G. L. WARNKEN HYGROMETER.

APPLICATION 11.21) mums. 1907.

UNITED STATES PATENT op nion.

GEORGE LOUIS WARNKEN, OF JAMESTOWN, CALIFORNIA, ASSIGNOR TO WARNKEN, CONGDON, COFFER COMPANY, OF JAMESTOWN, CALIFORNIA, A CORPORATION.

HYGROMETER.

Specification of Letters Patent.

Patented Dec. 3, 1907.

Application filed February 25. 1907. Serial No. 359.281.

To all whom it may concern:

Be it known that I, GEORGE LOUIS VVARN- KEN, a citizen of the United States, residing at Jamestown, in the county of Tuolumne same, such as will enable others skilled in the art to which it appertains to make and' use the same, reference being had to the accompanying drawings and the characters of reference marked t hereon,'which form a part of this specification.

This invention relates to improvements in medical apparatus and particularly to a means for treating with sterile air patients suffering with pneumonia or like diseases.

The improvements consist of a means for regulating the amount of moisture in said sterile air, the same being accomplished by means of a hygrometer having adjustable electric stations whereby magnetic valves are controlled; also by such other and further construction as will appear by a perusal of the following specifications and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views.

Figure 1 is a sectional view of a compartment showing my improved moisture controller arranged therein. Fig. 2 is a cross section of my improved hygrometer. Fig. 3 is a top plan View of my improved hygrometer.

'1 designates a compartment in which the patient may be placed for treatment. In order to properly treat said patient in this compartment I find it necessary to maintain a certain temperature, a certain amount of moisture in the air, and a certain weight of air, and in order to do this accurately I have provided an automatic regulating mechanism divided into three divisions, viz:one for regulating the temperature; one for regulatin the amount of moisture in the air; and one for regulating the weight of air. In this specification I describe and claim the means for regulating the moisture in the air, the other two being made the subject of separate applications for patents by me.

Referring again to the drawings, 2 desig nates the heater whereby the moisture of the air within the compartment is controlled,

the heater being connected to said compartment 1 by means of suitable piping 3. The heater is provided with a burner having an electrically operated controlling valve. ranged in said compartment 1 is a hygrometer 4 provided with an overhanging plate 5 secured to but being insulated from said hygrometer. Said late is provided with a curved slot 6, said s 0t being .concentric with the circle described by the pointer 7 of the hygrometer in its movement, for the purpose as will appear. Connected through the slot 6 are two negative pole screws 8 and 9, the pole 8 beingsuitably insulated from said plate 5. A wire 10 leads from said pole 8 to.

4. An electrically controlled signal bell 14 is em loyedupon the apparatus, and preferably ocated upon ,the compartment .1. 13 is a Wire leading'qfrom said ole 9 to one of the poles of said electric bel 14, and 13 is a wire leadi frontth other ole of the signal bell to the pesitive pole 12.0 the hygrometer.

Depending from the pole screws 8 and 9 are conductive pins 1p and 16, the pointer 7 operating between said pins, said pins forming contactstations for the pointer 7 as it' reaches theminimum or max mum polnt ofmoisture desired, the said screws 8 and 9 being set in the slot 6 so that the pins 15 and 16 will depend at such desired stations. Electrical current is appliedto the device in a suitable'manne zm In practice as thel amount of moisture in the compartment 1 increases the pointer 7 gradually contacts. with the pin 15. This connects the circuit to the valve under the heater2 thereby operating the same and reduces the heat and incidentally the amount of moisture in the compartment 1. As the moisture decreases the pointer 7 leaves its contact with the pin 8 thus breaking the circuit and permitting the valve under the heater 2 to resume its normal condition again.- If the moisture supply in said cornpartment 1 should cease for any reason the pointer 7 contacts with the pin 16 which connects the circuit to the bell 14 thus giving an alarm. -The pins 15 and 16 are flexible for the purpose of giving way before the pressure of the pointer 7, thus preserving the machine should the electric current fail.

Thus it will be seen I have produced a device which substantially fulfils the objects of the invention asset forth in the preamble to this specification.

While I have set forth in this specification the present and preferred construction of the device, deviations therefrom may be resorted to within the scope of the appended claims without departing from the spirit of the invention. Likewise while I have shown and described the device as it is used in connection with medical apparatus, still in practice it may be used wherever similar regulation as described is essential.

Having thus described my invention, what I claim as new and useful and desire to secure by Letters Patent is:

1. In an apparatus of the class described, an inclosed compartment, a heater associated with said compartment, a burner connected to said heater, an electrically controlled valve associated with said burner and adapted to control the supply of fuel thereto, an electrically controlled signal bell, an electrically operated hygrometer including a swinging indicator located in said compartment, two contacts spaced apart and connected to said hygrometer in the path of said indicator, means for adjusting one of said contacts to the point of greatest moisture reached by said indicator, means for adjusting the other of said contacts to the point of least moisture reached by said indicator, a conductor between one pole of said signal bell and the least moisture contact of said hygrometer, a conductor between the other pole of said signal bell and the controlling means of said hygrometer indicator and one pole of the burner valve, and a conductor between the greatest moisture contact of said hygrometer and the other pole of said burner valve.

2. In an apparatus of the class described, an inclosed compartment, an air heater associated with said compartment, a burner connected to said heater, an electrically controlled valve associated with said burner and.

adapted to control the supply of fuel thereto, an electrically controlled signal bell, an electrically operated hygrometer including a swinging indicator located in said compartment, a slotted plate connected to said hy grometer and insulated therefrom, a contact member adjustable in said slotted plate and insulated therefrom and extending into the path of said indicator and adapted to be adjusted relative to the greatest moisture point reached by the indicator, a contact adjustable in the slot of said plate and in electrical contact therewith and extending into the path of said indicator and adapted to be adjusted relative to the least moisture point reached by the indicator, a conductor between one pole of said signal bell and the least moisture contact of said hygrometer, a conductor between the other pole of said signal bell and the controlling means of said hygrometer indicator, a conductor between the controlling means of said hygrometer indicator and one pole of the burner valve, and

a conductor between the greatest moisture contact of the hygrometer and the other pole of said burner valve.

3. In an apparatus of the class described,

an inclosed compartment, a heater associated with said compartment, an electrically operated valve controlling the supply of fuel to said heater, an electrically operated signal bell, an electrically operated hygrometer, electrically operated means connected to said hygrometer whereby the decrease of the moisture within the compartment to a certain predetermined point will cause the operation of said'signal bell, and electrically operated means connected to said hygrometer whereby the increase of the moisture within the compartment to a certain predetermined point will operate the fuel controlling valve.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE LOUIS WARNKEN.

Witnesses:

C. E. CoNGDoN, H. S. FLANDUss. 

